Improvement in well-boring devices



UNITED STATES PATENT OFFICE.

.ALBERT A. WILSON, OF GREEN POINT, NEW YORK, ASSIGNOR `TO HIMSELF ANDHOFFMAN ATKINSON, OF ROUSEVILLE, PENNSYLVANIA.

IMPROVEMENT IN WELL-BORING DEVICES.

Specilication forming'part of Letters Patent No. 47,249, dated April ll,1865.

To all whom it may concern:

Be it known that I, ALBERT AUGUSTUS WlLsON, of Green Point, in thecounty ot' Kings and State ot' NewYork, have invented a new and usefulImprovement in the Construction of Tools. used in Artesian-Vell Boring 5and I do hereby declare that the following is a full, clear, and exactdescription of the same,-

Yreference being had to the accompanying drawings, forminga part ot thisspecification, in whichm Figure l is aside elevation ofthe jar portionotl the stem oi' the tool which bores through rocks and other hardsubstances. Fig. 2 is a vertical central section and partial elevationof the same. Fig. 3 is a horizontal' section of Fig. l in the line :v x.Fig. 4 is a horizontal section in the li-ne y y of Fig. 2. Fig. 5 is anelevation of the jar, with the stem ot' the drill or' auger keyed to itin a novel manner, which inode ot' keying or coupling is thesubject-matter of another application for a patent tiled by'me on aneven date with this.

Similar letters'of reference in the several iigures indicatecorresponding parts.

My invention relates to that portion of' the stem ot the drill orcutting tool technically known as the jar,and the. nature of myimprovement consists in constructing the jar in such manner that thesurfaces thereof which come in violent contact at the striking ofthesecond blow of the drill or cutting tool are'so strengthened, withoutincreasing the diam eter of the jar, as to lessen the liability ofthelinks ol the jar being broken when the second blow is struck by theupper link, as will be hereinafter described.

To enable others skilled in the art. to make and use my invention, Iwill proceed to describe the same, with reference to the drawings.

I so construct the jar that its two links, A B, when put together andcut horizontally in two, present the i'orm ot' a cylinder, asreprestnted in Fig. 8, at whatever point the section may be taken-thatis, when the link A is slipped down upon the shoulder a. of the link B,and the shoulder b of the link A rests against the upper end of the linkB, about as represented in Fig. 2. The cylinder presented by the sectionthrough the two links A B is hollow between the points c c, which pointsdetermine the length of separate up-anddown By thus constructing the jarit will be seen that the concussion-faces ot the jar are iucreased inarea and sustained by an increased body of metal, and while this is so,the diameter of the jar at any point is no greater than the width of theordinary jars in use. I increase the concussion and sustaining surfaceof the lower end otl the link A and the upper end ot' the link B of agiven-sized jar to theamount included between the red dotted lines it itin Fig. 3. I alsoincrease the concussion and sustaining surfaces at thetop of lilik A and at the base of lilik B to the amount included betweenthe red dotted lines s s s in Fig. 3.

Jars are usually made of two iiat links, and owing to the slight orsmall body of metal which is left to form the concussion-faces, the endsof the links very frequently fracture or break out and 'cause a veryserious delay in the boring of the welhaud also subject the operator toconsiderable expense and labor in their replacement; and in cases oi"deep boring, the operation is often proceeded with without aknowledge'on the part of 'the operator that the j ar has been broken andis not performing its functions.

lt is obvious that my invention may be embodied in other than eylindricjars, and there fore l do not contine myself tothe 011e form shown. Anellipse, oval, or squareshaped figure, divided by radial lines, willpresenta larger concussion-surface in my jar than is presented by any ofthe forms of jars now in use.

What I claim as my invention, `and desire to secure by Letters Patent,is-

lhe method, substantially asherein de-` ALBERT AUGUSTUS wiLsoN.

Witnesses R. T. CAMPBELL, E. .ScHAFEm

